Dairy sediment filter



Dec. 15, 1936. w A, HEHN 2,064,259

DAIRY SEDIMENT FILTER Filed July 12, 1935 5 Shets-Sheeb l lnven lor ml l'am Help)? A Home];

Dec. 15, 1936. H'EHN 2,064,259

DAIRY SEDIMENT FILTER Filed July 12, 1935 5 Sheets-Sheet 2 I nven'lor gwmm A Home};

Dec.15, 1936. w. A. HEHN DAIRY SEDIMENT FILTER Filed July 12; 1935 5 Sheets-Sheet 3 .oooooooooooooom Inventor A llomey Patented Dec. 15, 1936 UNHTE TAES DAIRY SEDIMENT FILTER.

William A. Hehn,

Application July 12,

2 Claims.

This invention relates to filtering devices and the object of the invention is to provide a filter for filtering sediment from pasteurized cream.

A further object of the invention is to provide a gravity flow filter which will insure the removal of the finest sediment from the cream.

The invention together with its objects and advantages will be best understood from a study of the following description taken in connection with the accompanying drawings wherein:

Figure l is an elevational view of a filter em bodying the features of the present invention certain parts being broken away and shown in section.

Figure 2 is a sectional view taken substantially on line 2-2 of Figure 1.

Figure 3 is a bottom plan view of a bottom filtering pan.

Figure 4 is a sectional view taken substantially on the line i i of Figure 3.

Figure 5 is a fragmentary detail plan view through the filtering pan shown in Figure 3 illustrating certain details hereinafter more fully referred to.

Figure 6 is a View similar to Figure l taken through one of the upper filtering pans.

Figure '7 is a fragmentary plan view of the screen, shown in the uppermost filtering pan.

Figure 8 is a view similar to Figure 7 of the screen in the bottom of the intermediate filtering pan.

} Figure 9 is a perspective view of a feed nozzle assembly.

Figure 10 is a detail View taken substantially on the line Iii-IE! of Figure 9.

Referring to the drawings: by reference numerals it will be seen that the filtering device comprises a leg supported table 5 which supports a substantially frustro-conical receiving pan or tray 6.

Rising from the table 5 is a frame structure consisting of end members i and an intermediate member 8. At their upper ends the members l and 8 are connected by a top plate 9.

Provided on the members i and 8 arevertical series of spaced angle iron rails it.

Supported within the frame structure at opposite sides of the intermediate member 8 is a vertical series of filtering or strainer pans indicated respectively by the reference numerals ll, l2 and l3.

Arranged in alternate relation to the filtering pans are inclined troughs It, the uppermost trough 14 extending inwardly from a frame member i, and the lowermost trough l4 extend- Jamestown, N. Dak.

1935, Serial No. 31,114 (Cl. 210-149) ing laterally from the intermediate frame member 8. f

Each of the troughs consists of a pair of side members and an inclined bottom as clearly shown.

The pans or trays H and I2 are substantially identical in construction, the same being substantially rectangular in top plan, having side walls l5, end walls It, and a bottom wall having a relatively elongated inclined portion ll and a shorter inclined portion !8. The portions ii and 8 at the bottom wall are in synclinal I relation as clearly shown in Figure 6. Also the section ll of the bottom wall is provided with an opening over' which is disposed a screen I9 secured in place in any suitable manner as for example by a suitable frame 20. i s

The screen it in the bottom of the pan H, as. shown in Figure 7 consists of a sheetof metal provided with a multiplicity of relatively wide openings or apertures, while the screen 3 in the bottom of the pan I2 as shown in Figure 8 also consists of a sheet of metal, but having rela tively small apertures as shown. Thus: the pans H and I2 as shown in Figure 1 are disposed with the bottom sections I! disposed in overlying relation to the trough It so that each trough serves to receive the filtered milk from an upper pan and direct it to the next lowermost pan.

At the walls It thereof each pan is provided with angle bars 2| which cooperate with the angle bars Iii in a manner clearly shown in Figure 1 for slidably supporting the pans in position in the fame.

The pans l3 are different from the pans l I and l2 only in that the screen I901. is of wire mesh and is hinged at one end as at 22 as shown in Figure 4. Also the bottom section Ila of the pan l3 has the opening closed by the screen um rimmed by a flange 23 that has an inwardly turned edge cooperating with the screen I9a for clamping in position and over the screen Hm a plurality of plies 24 of cheese cloth or other suitable filtering material.

Latch means 25 are provided for retaining the. screen E90, and cloth 24 in position with respect to the opening in the bottom of the tray or pan 1%.

Disposed over the pans H are elongated pera forated tubular feed nozzles 26 connected by T-fittings 21, nipples 28, and elbows 29 with a pipe 30. Provided in the pipe 30 is a suitable valve 3l, one side of which is connected with a supply pipe 32.

As is thought apparent and as will be hereinafter more fully explained, the cream to be filtered is discharged into the uppermost tray H at one side of the device from the proper nozzle 26 and filtered through the trays into the trough or receptacle 6.

From the trough or receptacle 6 the filtered cream is drawn ofi through the medium of a pump 33 and suitable piping 34 and 35 respectively and under pressure conveyed tothe cooler or the like provided therefor.

To facilitate handling of the trays each is provided at either or both ends thereof with suitable handles 36.

'so that while one side of the filtering device.

From the above it will be apparent that either or both sides of the filtering device may be used. However it will be found more desirable to use but one side of the filtering device at a time is being used the trays at the other side may be cleansed for sanitary purposes.

For filtering the cream the valve 3| is placed in proper position so as to permit the cream from the source of supply to flow through the pipe 30 in the proper direction and discharge through the nozzle 26 into the first tray II. In this tray the first filtering action takes place, the cream passing through the screen l9 on to the trough M. The trough l4 directs the filtered cream into the tray 12 where a second filtering operation takes place. Passing from the tray M2 the cream is directed by the lowermost trough '4 into the pan [3 where a thorough finer filtering' of the cream takes place. From the tray I3 the cream filters through the cloth 24 and screen |9a into the receptacle 6. From the receptacle 6 the filtered cream is drawn oif and cooled.

Having thus described my invention, what I claim as new is: r

1. A dairy sediment filter comprising a frame like supporting structure, a receptacle for receiving the filtered -material mounted in the bottom of the supporting structure, two parallel series of alternately arranged filtering trays and troughs mounted in the structure above said receptacle, each or said trays having sides and ends and a bottom, said bottom including a relatively long section and a relatively short section, said bottom sections being arranged in synclinal relation, and the long bottom section being provided with an opening and a filtering screen disposed over the opening; and each of said troughs having an inclined bottom in spaced parallel relation to the long bottom section of the next adjacent upper tray, and spaced therefrom a distance sufficient to permit the fluid like supporting structure, a receptacle for receiving the filtered material mounted in the bottom of the supporting structure, two parallel series of alternately arranged filtering trays and troughs mounted in the structure above said receptacle, each of said trays having sides and ends and a bottom, said bottom including a relatively long section and a relatively short section, said bottom section being arranged in synclinal relation, and the long bottom section being provided with an opening and a filtering screen disposed over the opening; and each of said troughs having an inclined bottom in spaced parallel relation to the long bottom section of the next adjacent upper tray, and spaced therefrom a distance sufiicient to permit the fiuid filtering through the screen of the tray to contact with atmospheric air for aerating the material being filtered during the filtering thereof,

the troughs in each section sloping in reverse directions relative to one another and the trays in each series being reversely disposed with reto a selected nozzle or to both of thenozzles simultaneously.

WILLIAM HEHN. 

